The nurse is assessing a patient’s visual acuity using a Snellen chart. The patient states he cannot see the top of the chart.
What action should the nurse take?

Document findings

Determine whether the patient can count fingers

Obtain a tumbling E chart to assess visual acuity

Complete an internal eye exam .

Answer and Explanation

The Correct Answer is B

Choice B rationale
If a patient states that he cannot see the top of the Snellen chart, the nurse should determine whether the patient can count fingers. If the patient is unable to read the top line of the Snellen

chart at 6 meters, the nurse can reduce the distance to 3 meters from the Snellen chart. If the patient still cannot read the chart, the nurse can then determine whether the patient can count fingers.
Choice A rationale
While documenting findings is an important part of the nursing process, it would not be the immediate action the nurse should take if a patient cannot see the top of the Snellen chart.
Choice C rationale
Obtaining a tumbling E chart to assess visual acuity could be considered if the patient is unable to read letters or numbers, but it would not be the immediate action the nurse should take if a patient cannot see the top of the Snellen chart.
Choice D rationale
Completing an internal eye exam would not be the immediate action the nurse should take if a patient cannot see the top of the Snellen chart.

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Correct Answer is B

Explanation

Choice B rationale
Patients who experience severe cluster headaches should be instructed to take medications as soon as they sense the onset of symptoms. Cluster headaches are characterized by severe, debilitating pain that reaches peak intensity within a short period of time, often within 15 minutes. Therefore, early intervention is crucial to manage the pain effectively.
Choice A rationale

Waiting twenty to thirty minutes after the onset of symptoms to take medications may not be effective for cluster headaches. The pain of a cluster headache often reaches peak intensity within 15 minutes, so delaying medication could result in unnecessary suffering.
Choice C rationale
Waiting until the patient’s pain becomes unbearable is not recommended for managing cluster headaches. The goal of treatment is to prevent or reduce pain, not to wait until it becomes unbearable.
Choice D rationale
Taking medications when the patient senses their symptoms are peaking is not the most effective strategy for managing cluster headaches. Given the rapid onset and severe pain associated with cluster headaches, medications should be taken as soon as the patient senses the onset of symptoms.

A. Respiratory acidosis. B. Respiratory alkalosis. C. Metabolic acidosis. D. Metabolic alkalosis.

Correct Answer is D

Explanation

Choice A rationale:
Respiratory acidosis is characterized by a low pH (less than 7.35), a high PaCO2 (greater than 45 mm Hg), and a normal or high HCO3 (22-26 mEq/L). It occurs when there is a buildup of carbon dioxide in the blood due to impaired ventilation.
The patient's ABGs do not align with respiratory acidosis because the pH is elevated (7.6), and the PaCO2 is within the normal range (40 mm Hg).
Choice B rationale:
Respiratory alkalosis is characterized by a high pH (greater than 7.45), a low PaCO2 (less than 35 mm Hg), and a normal or low HCO3 (22-26 mEq/L). It occurs when there is excessive loss of carbon dioxide through hyperventilation.
The patient's ABGs do not align with respiratory alkalosis because the HCO3 is elevated (32 mEq/L), which is not typical for this condition.
Choice C rationale:
Metabolic acidosis is characterized by a low pH (less than 7.35), a normal or low PaCO2 (less than 40 mm Hg), and a low HCO3 (less than 22 mEq/L). It occurs when there is an excess of acid in the body or a loss of bicarbonate.
The patient's ABGs do not align with metabolic acidosis because the pH is elevated (7.6), and the HCO3 is elevated (32 mEq/L).
Choice D rationale:

Metabolic alkalosis is characterized by a high pH (greater than 7.45), a normal or high PaCO2 (40-45 mm Hg), and an elevated HCO3 (greater than 26 mEq/L). It occurs when there is an excess of bicarbonate in the body or a loss of acid.
The patient's ABGs align with metabolic alkalosis because of the high pH (7.6), normal PaCO2 (40 mm Hg), and elevated HCO3 (32 mEq/L).

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The nurse is assessing a patient’s visual acuity using a Snellen chart. The patient states he cannot see the top of the chart. What action should the nurse take?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a patient who experiences severe cluster headaches. At what point in the course of a new headache should the patient be instructed to take medications?

Correct Answer is B

Explanation

A nurse is analyzing the arterial blood gas (ABG) results of a patient. The patient’s ABGs are: pH:7.6, PaCO2:40 mm Hg, HCO3:32 mEq/L. Which of the following acid-base conditions should the nurse identify the patient is experiencing?

Correct Answer is D

Explanation

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The nurse is assessing a patient’s visual acuity using a Snellen chart. The patient states he cannot see the top of the chart.
What action should the nurse take?